Product Overview
The DAC7578 is an 8-channel, 12-bit digital-to-analog converter (DAC) with an I2C interface, designed for applications that require multiple independent analog voltage outputs from a single controller.
This module supports STEMMA QT / Qwiic connectivity, allowing quick, solder-free I2C connections with Arduino, Raspberry Pi, ESP32, STM32, and other microcontroller platforms. Each channel can be controlled individually, making it suitable for precision voltage control, signal generation, and industrial or laboratory projects.
Key Features
8 independent DAC output channels
12-bit resolution (4096 steps per channel)
I2C two-wire serial interface
Ultra-low power consumption
Power-on reset outputs default to zero scale
Low glitch energy for stable analog output
Compatible with STEMMA QT / Qwiic ecosystem
Works with 3.3V and 5V systems
Technical Specifications
| Parameter | Specification |
|---|
| DAC Resolution | 12-bit |
| Number of Channels | 8 |
| Interface | I2C (2-wire serial) |
| Supply Voltage | 2.7V – 5.5V |
| Power Consumption | 0.13 mA per channel at 5V |
| Glitch Energy | 0.15 nV-s |
| Power-On Reset | Zero scale |
| Operating Temperature | −40°C to +125°C |
| Module Dimensions | 28.0 × 17.8 × 4.7 mm |
| Connector | STEMMA QT / Qwiic (JST-SH 4-pin) |
Typical Applications
Multi-channel analog voltage generation
LED brightness and color control
Audio and synthesizer control voltage (CV)
Sensor signal simulation
Industrial control systems
Laboratory instrumentation
Robotics and automation projects
Interface Description
| Pin | Function |
|---|
| VCC | 2.7V – 5.5V power input |
| GND | Ground |
| SDA | I2C data |
| SCL | I2C clock |
Package Includes
1 × DAC7578 8-Channel 12-bit I2C DAC Module
STEMMA QT / Qwiic connector pre-installed
Pin header (not soldered)
Notes
Output voltage range depends on the supply voltage
QT/Qwiic cable not included
Suitable for single-supply analog output applications
